<style>
/*对角钱矩形宽度为50，高度为100，分别对应border-top和border-left两个属性来设定*/
.d1{border-top:100px threedlightshadow solid;border-left:120px windowframe solid;width:0;height:0;position:relative;color:#FFF}
span{display:block;width:40px}
.s1{position:absolute;top:-70px;left:-44px;color:black;}
.s2{position:absolute;bottom:8px;right:55px}
</style>
 
<div class="d1">
<span class="s1">专业</span>

<span class="s2">项目</span>

</div>